Added Crankshaft support for JavaScript getters.

src/hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5605 matching lines @@
     AddInstruction(new(zone()) HSoftDeoptimize);
     current_block()->MarkAsDeoptimizing();
   }
   ASSERT(expr->key()->IsPropertyName());
   Handle<Object> name = expr->key()->AsLiteral()->handle();
   HValue* context = environment()->LookupContext();
   return new(zone()) HLoadNamedGeneric(context, obj, name);
 }
 
 
+static void LookupInPrototypes(Handle<Map> map,
+                               Handle<String> name,
+                               LookupResult* lookup) {
+  while (map->prototype()->IsJSObject()) {
+    Handle<JSObject> holder(JSObject::cast(map->prototype()));
+    map = Handle<Map>(holder->map());
+    map->LookupDescriptor(*holder, *name, lookup);
+    if (lookup->IsFound()) return;
+  }
+  lookup->NotFound();
+}
+
+
+HInstruction* HGraphBuilder::BuildCallGetter(HValue* obj,
+                                             Property* expr,
+                                             Handle<Map> map,
+                                             Handle<Object> callback,
+                                             Handle<JSObject> holder) {
+  if (!callback->IsAccessorPair()) return BuildLoadNamedGeneric(obj, expr);
+  Handle<Object> getter(Handle<AccessorPair>::cast(callback)->getter());
+  Handle<JSFunction> function(Handle<JSFunction>::cast(getter));
+  AddCheckConstantFunction(holder, obj, map, true);
+  AddInstruction(new(zone()) HPushArgument(obj));
+  return new(zone()) HCallConstantFunction(function, 1);
+}
+
+
 HInstruction* HGraphBuilder::BuildLoadNamed(HValue* obj,
                                             Property* expr,
                                             Handle<Map> map,
                                             Handle<String> name) {
   LookupResult lookup(isolate());
   map->LookupDescriptor(NULL, *name, &lookup);
   if (lookup.IsField()) {
     return BuildLoadNamedField(obj,
                                expr,
                                map,
                                &lookup,
                                true);
   } else if (lookup.IsConstantFunction()) {
     AddInstruction(new(zone()) HCheckNonSmi(obj));
     AddInstruction(HCheckMaps::NewWithTransitions(obj, map, zone()));
     Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*map));
     return new(zone()) HConstant(function, Representation::Tagged());
+  } else if (lookup.IsPropertyCallbacks()) {
+    Handle<Object> callback(lookup.GetValueFromMap(*map));
+    Handle<JSObject> holder;
+    return BuildCallGetter(obj, expr, map, callback, holder);
   } else {
+    LookupInPrototypes(map, name, &lookup);
+    if (lookup.IsPropertyCallbacks()) {
+      Handle<Object> callback(lookup.GetValue());
+      Handle<JSObject> holder(lookup.holder());
+      return BuildCallGetter(obj, expr, map, callback, holder);
+    }
     return BuildLoadNamedGeneric(obj, expr);
   }
 }
 
 
 HInstruction* HGraphBuilder::BuildLoadKeyedGeneric(HValue* object,
                                                    HValue* key) {
   HValue* context = environment()->LookupContext();
   return new(zone()) HLoadKeyedGeneric(context, object, key);
 }
@@ skipping 3865 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal